Spin wave absorber generated by artificial surface anisotropy for spin wave device network
Naoki Kanazawa,
Taichi Goto,
Koji Sekiguchi,
Alexander B. Granovsky,
Hiroyuki Takagi,
Yuichi Nakamura,
Mitsuteru Inoue
Affiliations
Naoki Kanazawa
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Taichi Goto
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Koji Sekiguchi
JST, PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
Alexander B. Granovsky
Faculty of Physics, Moscow State University, Leninskie Gory, Moscow 119992, Russia
Hiroyuki Takagi
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Yuichi Nakamura
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Mitsuteru Inoue
Department of Electrical and Electronic Information Engineering, Toyohashi University of Technology, 1-1 Hibari-Ga-Oka, Tempaku, Toyohashi, Aichi 441-8580, Japan
Spin waves (SWs) have the potential to reduce the electric energy loss in signal processing networks. The SWs called magnetostatic forward volume waves (MSFVWs) are advantageous for networking due to their isotropic dispersion in the plane of a device. To control the MSFVW flow in a processing network based on yttrium iron garnet, we developed a SW absorber using artificial structures. The mechanical surface polishing method presented in this work can well control extrinsic damping without changing the SW dispersion of the host material. Furthermore, enhancement of the ferromagnetic resonance linewidth over 3 Oe was demonstrated.
